Oops, it doesn't look like 'jump hya day' is a national day..

Other days

china

China Day
ruby

Ruby Day
reading

Reading Day
eat what you want

Eat What You Want Day
bounce

Bounce Day
nae nae

Nae Nae Day
blanket fort

Blanket Fort Day
law

Law Day
brow

Brow Day
pampering

Pampering Day